398495442 has 8 divisors (see below), whose sum is σ = 796990896. Its totient is φ = 132831812.

The previous prime is 398495437. The next prime is 398495443. The reversal of 398495442 is 244594893.

It is a sphenic number, since it is the product of 3 distinct primes.

398495442 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 398495391 and 398495400.

It is not an unprimeable number, because it can be changed into a prime (398495443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33207948 + ... + 33207959.

It is an arithmetic number, because the mean of its divisors is an integer number (99623862).

Almost surely, 2^398495442 is an apocalyptic number.

398495442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398495442 is a wasteful number, since it uses less digits than its factorization.

398495442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66415912.

The product of its digits is 1244160, while the sum is 48.

The square root of 398495442 is about 19962.3506130916. The cubic root of 398495442 is about 735.8813325240.

The spelling of 398495442 in words is "three hundred ninety-eight million, four hundred ninety-five thousand, four hundred forty-two".